78648-40120-71

Frequently Asked Questions

Q: What is OEM part 78648-40120-71 and what does it do?
A: SKU 78648-40120-71 is a single coil spring lockwasher designed for manual pallet jack assemblies. This part secures bolted joints against vibration loosening on compatible manual pallet jacks from major OEM manufacturers.

Q: What is the material composition and construction type?
A: This lockwasher is constructed from standard carbon steel with a single coil spring design. The spring creates tension that maintains bolt preload and resists loosening from vibration, a critical function for pallet jack structural integrity.

Q: Where on a manual pallet jack is this lockwasher typically used?
A: The 78648-40120-71 lockwasher is used on bolted connections throughout manual pallet jack assemblies including chassis attachment points, wheel mounts, handle assemblies, and load platform fasteners where vibration resistance is critical.

Q: How do I verify compatibility with my manual pallet jack?
A: Verify your pallet jack OEM part number and model documentation. Confirm the lockwasher diameter and bolt hole size match your equipment fastener requirements. The SKU 78648-40120-71 is engineered for specific OEM applications.

Q: What is the performance difference between this and other lockwasher designs?
A: The single coil spring design is economical and effective for general vibration resistance. Compared to helical designs, single coil washers are lighter and suitable for standard fastening applications where moderate vibration resistance is required.